Pengaruh Aplikasi Pupuk Daun Kenfolan Terhadap Pertumbuhan Vegetatif Bibit KelapaSawit dan Serangan Penyakit Bercak Daun Di Main Nursery

Abstract

MUHAMMAD WILDAN AZZAMUDDIN. Judul laporan akhir “Pengaruh Aplikasi Pupuk Daun Kenfolan Terhadap Pertumbuhan Vegetatif Bibit Kelapa Sawit dan Serangan Penyakit Bercak Daun Di Main Nursery” Dibimbing oleh EDI WIRAGUNA

Pada fase main nursery, bibit kelapa sawit rentan mengalami hambatan pertumbuhan dan serangan penyakit bercak daun oleh jamur Curvularia. Penelitian ini bertujuan mengevaluasi pengaruh pupuk daun Kenfolan terhadap pertumbuhan vegetatif dan intensitas serangan Curvularia. Penelitian dilakukan di PT Aek Tarum menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan lima konsentrasi Kenfolan (0–4 ml/L) dan tiga ulangan. Hasil menunjukkan bahwa konsentrasi 3 ml/L memberikan hasil terbaik, ditunjukkan oleh peningkatan tinggi bibit (40,07 cm), diameter batang (1,58 cm), jumlah pelepah (4,25 helai), serta menekan serangan Curvularia hingga 0%. Dosis 3 ml/L direkomendasikan sebagai konsentrasi optimal untuk fase pembibitan utama. Kata Kunci: curvularia, kelapa sawit, main nursery, pertumbuhan vegetatif, kenfolan.

MUHAMMAD WILDAN AZZAMUDDIN. Final report title: “The Effect of Kenfolan Foliar Fertilizer Application on the Vegetative Growth of Oil Palm Seedlings and Leaf Spot Disease Incidence in the Main Nursery” Supervised by EDI WIRAGUNA.

During the main nursery phase, oil palm seedlings are susceptible to growth inhibition and leaf spot disease caused by Curvularia fungi. This study aimed to evaluate the effect of Kenfoliar foliar fertilizer on vegetative growth and Curvularia infection intensity. The research was conducted at PT Aek Tarum using a Randomized Complete Block Design (RCBD) with five Kenfoliar concentrations (0–4 ml/L), each with three replications. Results showed that the 3 ml/L concentration produced the best outcomes, with increases in plant height (40.07 cm), stem diameter (1.58 cm), number of fronds (4.25), and a complete suppression of Curvularia infection (0%). A 3 ml/L concentration is recommended as the optimal dosage during the main nursery stage.

Keywords: curvularia, kenfolan, main nursery, oil palm, vegetative rowth.